a4 – Support for A4 paper sizes

Pro­vides sup­port for A4 pa­per sizes, su­per­sed­ing a LaTeX 2.09
pack­age of the same name (the pack­age was de­vel­oped from a
now-ex­tinct pack­age called a4­dutch).

The pack­age is mostly
su­per­seded by the a4­pa­per op­tion of LaTeX it­self and by the
ge­om­e­try pack­age. Its mar­gins are
slightly nar­rower than those of the a4­pa­per op­tion
(there are those that claim this is a ty­po­graph­i­cally poor
choice), but it also has a wide­mar­gins op­tion.